Planck temperature

Planck temperature, denoted by TP, is the unit of temperature in the system of natural units known as Planck units. Planck temperature, denoted by TP, is the unit of temperature in the system of natural units known as Planck units. It serves as the defining unit of the Planck temperature scale. In this scale the magnitude of the Planck temperature is equal to 1, while that of absolute zero is 0.Other temperatures can be converted to Planck temperature units. For example, 0 °C = 273.15 K = 1.9279×10−30 TP. In SI units, the Planck temperature is about 1.417×1032 kelvin (equivalently, degrees Celsius, since the difference is trivially small at this scale), or 2.55×1032 degrees Fahrenheit or Rankine. What today is known as the Planck temperature was first introduced in 1899 by Max Planck together with his introduction of what today is known as the Planck length, the Planck mass and Planck time.